If the probability of a defective bolt is 0.1, then the mean and standard deviation for the distribution of bolts in a total of 400 are

If the probability of a defective bolt is 0.1, then the mean and stand

1.	If the probability of a defective bolt is 0.1, then the mean and standard deviation for the distribution of bolts in a total of 400 are
A.	30, 3
B.	40, 5
C.	30, 4
D.	40, 6
Answer» E.

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If the probability of a defective bolt is 0.1, then the mean and standard deviation for the distribution of bolts in a total of 400 are

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